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/*
* Copyright (C) 2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "JSRunLoopTimer.h"
#include "Strong.h"
#include <wtf/HashMap.h>
#include <wtf/Lock.h>
#include <wtf/Vector.h>
namespace JSC {
class JSPromiseDeferred;
class VM;
class JSCell;
class PromiseDeferredTimer : public JSRunLoopTimer {
public:
using Base = JSRunLoopTimer;
PromiseDeferredTimer(VM&);
void doWork(VM&) override;
void addPendingPromise(VM&, JSPromiseDeferred*, Vector<Strong<JSCell>>&& dependencies);
JS_EXPORT_PRIVATE bool hasPendingPromise(JSPromiseDeferred* ticket);
JS_EXPORT_PRIVATE bool hasDependancyInPendingPromise(JSPromiseDeferred* ticket, JSCell* dependency);
// JSPromiseDeferred should handle canceling when the promise is resolved or rejected.
bool cancelPendingPromise(JSPromiseDeferred*);
using Task = Function<void()>;
void scheduleWorkSoon(JSPromiseDeferred*, Task&&);
void stopRunningTasks() { m_runTasks = false; }
JS_EXPORT_PRIVATE void runRunLoop();
private:
HashMap<JSPromiseDeferred*, Vector<Strong<JSCell>>> m_pendingPromises;
Lock m_taskLock;
bool m_runTasks { true };
bool m_shouldStopRunLoopWhenAllPromisesFinish { false };
bool m_currentlyRunningTask { false };
Vector<std::tuple<JSPromiseDeferred*, Task>> m_tasks;
};
} // namespace JSC